4 CrO3 + 3 As2O3 + 12 HCl + 3 H2O → 4 CrCl3 + 6 H3AsO4
This is an oxidation-reduction (redox) reaction:
6 AsIII - 12 e- → 6 AsV (oxidation)
4 CrVI + 12 e- → 4 CrIII (reduction)
As2O3 is a reducing agent, CrO3 is an oxidizing agent.
Reactants:
- CrO3 – Chromium trioxide
- As2O3 – Diarsenic trioxide
- HCl – Chlorane , Hydrogen chloride
- Other names: Hydrochloric acid , M , Uriatic acid
- Appearance: Colorless, transparent liquid, fumes in air if concentrated ; Colorless gas ; Colourless compressed liquefied gas with pungent odour ; Colorless to slightly yellow gas with a pungent, irritating odor. [Note: Shipped as a liquefied compressed gas.]
- H2O – Water, oxidane
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